Writing is THINKING on paper. The quality of our thoughts is reflected in our writing.
More Than Just Research Papers:
"Rock Stars" by Rick Reilly
"What Caffeine Actually Does to Your Brain" by Kevin Purdy
"Understanding Uncertainty: What Was the Probability of Obama Winning?" by David Spiegelhalter

Process Writing
How to Change a Car Battery by Josh Clark

Six Traits Analysis:
"Grinning Bankers" by Jim Hightower
"Sacred Objects" by William Zinsser
"Literature Influences Dickey in Fatherhood" by Marty Noble

Presidential Revisions:
Abraham Lincoln
Theodore Roosevelt
Franklin Roosevelt
Barack Obama

Models of Food Criticism:
Jinya: Ramen Freaks and Noodle Geeks by Jonathan Gold
Pizza a la McNally by Adam Platt

Useful Links and Resources:
Grammar Girl
Ernest Hemingway's Top 5 Tips For Writing Well by Brian Clark
How to Write With Style by Kurt Vonnegut
Sluggo's Museum of Classic Pop Culture
Why I Blog by Andrew Sullivan
Peter Elbow discusses spelling and grammar:


R.A.F.T
"Bad thinking" (aka Logical Fallacies)